Redoing the slsMesh type
 Changes to be committed:
	modified:   .gitignore
	new file:   .kscope/cscope.files
	new file:   .kscope/project.conf
	new file:   .kscope/queries.xml
	new file:   .kscope/session.conf
	modified:   Makefile
	modified:   bin/demo
	modified:   bin/slsprototest
	new file:   content/s.frag
	new file:   content/s.vert
	modified:   demosrc/main.c
	modified:   src/gl/sls-gl.h
	modified:   src/gl/sls-mesh.c
	modified:   src/gl/sls-mesh.h
	modified:   src/gl/sls-shader.c
	modified:   src/window/sls-glwindow.c
	modified:   tests/content-test.c